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Sustainable succinylation of cellulose in a CO 2 -based switchable solvent and subsequent Passerini 3-CR and Ugi 4-CR modification

dc.rights.licenseopen
hal.structure.identifierKarlsruher Institut für Technologie [KIT]
dc.contributor.authorSÖYLER, Z.
hal.structure.identifierKarlsruher Institut für Technologie [KIT]
dc.contributor.authorONWUKAMIKE, Kelechukwu
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorGRELIER, Stéphane
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorGRAU, Etienne
IDREF: 187909261
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorCRAMAIL, Henri
hal.structure.identifierUniversität Karlsruhe [TH]
hal.structure.identifierKarlsruher Institut für Technologie [KIT]
dc.contributor.authorMEIER, Michael A.R.
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2018
dc.identifier.issn1463-9262
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/19798
dc.description.abstractEnA rapid and effective dissolution and activation of cellulose was demonstrated by a reversible reaction of CO2 with the hydroxyl groups of the cellulose backbone in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). The obtained carbonate complex of cellulose was subsequently subjected to in situ derivatization with succinic anhydride without the need of any additional catalyst under very mild conditions. As a result of optimization studies, cellulose was succesfully converted to cellulose succinates with degrees of substitution (DS) ranging from 1.51 to 2.64, depending on the reaction conditions and the molar ratio of succinic anhydride. The optimized reaction conditions were successfully applied to different types of cellulose samples including microcrystalline cellulose (MCC) and organosolv wood pulp (WP), exhibiting similar conversions. Furthermore, the carboxylic acid moiety, introduced by the succinylation, was further converted via Passerini three-component reactions (Passerini-3CR) and Ugi four-component reactions (Ugi-4CR). 31 P NMR revealed the quantitative conversions of carboxylic acid moieties on the cellulose backbone under mild conditions. The obtained products were thoroughly characterized by ATR-IR, 1 H, 13 C, and 31 P NMR spectroscopies as well as by gel permeation chromatography (GPC). Thermal properties of the obtained products were investigated by differential scanning calorimetry (DSC) and by thermogravimetric analysis (TGA), revealing glass transitions (Tg) for all the Passerini and Ugi products between 76-116 °C and high thermal stability between 263-290 °C. The reported methodology represents a very mild, highly efficient and sustainable route for the dissolution of cellulose and the synthesis of cellulose succinates. The subsequent modifications of the obtained cellulose succinates via multicomponent reactions resulted in materials with improved thermal properties and offers a straightforward and versatile modification strategy for cellulose.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enSustainable succinylation of cellulose in a CO 2 -based switchable solvent and subsequent Passerini 3-CR and Ugi 4-CR modification
dc.typeArticle de revue
dc.identifier.doi10.1039/C7GC02577G
dc.subject.halChimie/Polymères
bordeaux.journalGreen Chemistry
bordeaux.page214-224
bordeaux.volume20
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue1
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-02367176
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02367176v1
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